2003 INFINITI Q45
2 trims · Sedan
Starting MSRP
$52,000 – $61,600
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How much should you pay for the INFINITI Q45? Select a trim to update purchase and lease estimates.
MSRP by trim
Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.
Purchase information
Based on 45 Luxury
Total price (45 Luxury MSRP)
$52,000
Typical monthly
$1,030/mo
Avg. APR
7.00%
60-month loan estimate for good credit (rates as of 2026-07-11). Not a credit offer; actual APR varies by lender, credit, and dealer.
Open loan calculatorCompare 2003 INFINITI Q45 trims
45 Luxury
- MSRP
- $52,000
- Fuel economy (city/hwy)
- 16/22
- Horsepower
- 340 hp
- Torque
- 333 lb-ft
- Engine
- 4.5L V8 gas
- Seating
- 5
- Drivetrain
- RWD
- Cargo (cu ft)
- 13.6
- Max towing
- —
45 Premium
- MSRP
- $61,600
- Fuel economy (city/hwy)
- 16/22
- Horsepower
- 340 hp
- Torque
- 333 lb-ft
- Engine
- 4.5L V8 gas
- Seating
- 5
- Drivetrain
- RWD
- Cargo (cu ft)
- 13.6
- Max towing
- —
| Spec | 45 Luxury | 45 Premium |
|---|---|---|
| MSRP | $52,000 | $61,600 |
| Fuel economy (city/hwy) | 16/22 | 16/22 |
| Horsepower | 340 hp | 340 hp |
| Torque | 333 lb-ft | 333 lb-ft |
| Engine | 4.5L V8 gas | 4.5L V8 gas |
| Seating | 5 | 5 |
| Drivetrain | RWD | RWD |
| Cargo (cu ft) | 13.6 | 13.6 |
| Max towing | — | — |
Manufacturer specifications by trim and drivetrain. Same trim names with different MSRPs are distinct FWD/AWD (or other drivetrain) configurations from the catalog. MSRP excludes destination fees, taxes, and dealer-installed options.
Full specifications
Engine & drivetrain
- Engine type
- 45 Luxurygas45 Premiumgas
- Fuel type
- 45 Luxurypremium unleaded (required)45 Premiumpremium unleaded (required)
- Cylinders
- 45 LuxuryV845 PremiumV8
- Displacement
- 45 Luxury4.5 L45 Premium4.5 L
- Horsepower
- 45 Luxury340 hp45 Premium340 hp
- Torque
- 45 Luxury333 lb-ft45 Premium333 lb-ft
- Transmission
- 45 Luxury5-speed shiftable automatic45 Premium5-speed shiftable automatic
- Drivetrain
- 45 Luxuryrear wheel drive45 Premiumrear wheel drive
Dimensions
- Body type
- 45 LuxurySedan45 PremiumSedan
- Doors
- 45 Luxury445 Premium4
- Seating
- 45 Luxury545 Premium5
- Length
- 45 Luxury199.6 in45 Premium199.6 in
- Width
- 45 Luxury72.6 in45 Premium72.6 in
- Height
- 45 Luxury58.7 in45 Premium58.7 in
- Wheelbase
- 45 Luxury113 in45 Premium113 in
- Ground clearance
- 45 Luxury5.7 in45 Premium5.8 in
Capacity & weight
- Cargo capacity
- 45 Luxury13.6 cu ft45 Premium13.6 cu ft
- Max cargo capacity
- 45 Luxury13.6 cu ft45 Premium13.6 cu ft
- Curb weight
- 45 Luxury3,977 lbs45 Premium3,977 lbs
- Fuel tank
- 45 Luxury21.4 gal45 Premium21.4 gal
Fuel economy & EV
- Combined MPG
- 45 Luxury1845 Premium18
- City MPG
- 45 Luxury1645 Premium16
- Highway MPG
- 45 Luxury2245 Premium22
| Spec | 45 Luxury | 45 Premium |
|---|---|---|
| Engine & drivetrain | ||
| Engine type | gas | gas |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Cylinders | V8 | V8 |
| Displacement | 4.5 L | 4.5 L |
| Horsepower | 340 hp | 340 hp |
| Torque | 333 lb-ft | 333 lb-ft |
| Transmission | 5-speed shiftable automatic | 5-speed shiftable automatic |
| Drivetrain | rear wheel drive | rear wheel drive |
| Dimensions | ||
| Body type | Sedan | Sedan |
| Doors | 4 | 4 |
| Seating | 5 | 5 |
| Length | 199.6 in | 199.6 in |
| Width | 72.6 in | 72.6 in |
| Height | 58.7 in | 58.7 in |
| Wheelbase | 113 in | 113 in |
| Ground clearance | 5.7 in | 5.8 in |
| Capacity & weight | ||
| Cargo capacity | 13.6 cu ft | 13.6 cu ft |
| Max cargo capacity | 13.6 cu ft | 13.6 cu ft |
| Curb weight | 3,977 lbs | 3,977 lbs |
| Fuel tank | 21.4 gal | 21.4 gal |
| Fuel economy & EV | ||
| Combined MPG | 18 | 18 |
| City MPG | 16 | 16 |
| Highway MPG | 22 | 22 |